powell



P TENT Erica,

., "JOHN B. POWELL, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TOTHE' PONVELL MOTOR COMPANY, (LIMITED,) OF SAME PLACE;

SPRING-MOTOR.

SPECIFICATION forming part of Letters Patent No. 293,193, dated February 5, 1884.

i application filed October 31, 1883. (X0 model.)

To all whom it may concern:

Be it known that I,- JOHN 13. IownLL, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Spring-Motors; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which,

Figure 1 is a vertical section of my improvements, and Fig. 2 a plan view of the lower barrel.

My invention has relation to spring-motors spring, and the barrel of one shaft being coupled to the shaft of the adjoining barrel, so as to rotate therewith; and my improvements relate to the following features of construction: first, to forming or providing the lower barrel with teeth, so as to constitute it, in effect, a geanwheel, to which the winding power is applied, thereby dispensing with one gear-wheel in the construction heretofore practiced, and permitting the motor to be wound up while running i and without interfering with its running; second, to the provision of an automatic clutch for preventing the unwinding of the motor in case of failure of ac tion of the pawls employed for that purpose, In carrying my invention into effect I construct the motor generally in accordance with the construction shown and described in Letters Patent of the United States heretofore granted to me, Nos. 219,015 and 246,197, and as shown in the drawings, where A is the base, and B B two barrels, each with its own shaft and spring connected, as called for by said patents. Instead, however, of employing the gear-wheel shown in said first-recited pat- I gear r teeth Z).

ent, and which is located near the top of the motor and above the barrels, and which is the wheel whereby, through the intervention of a miterpinion, the motor is wound up, I form the lower barrel, as shown at B, with This makes a gear wheel as well as' a barrel of said lower barrel, B. I also provide a pinion, O, whichgears with said barrel-wheel B and is fast on a vertical shaft, 0, having bearings in the base A of the motor and in a bracket, D, which is attached to or forms a part of the upper framepiece, F. By applying a crank or equivalent V device to shaft 0 at its upper end, the pinion C and barrel-wheel B will be rotated, and the motor thus wound up. As the winding starts on the lower barrel and the power of the springs is given off from the top barrel to the I machinery to be operated by the motor, it follows that the motor may, by reason of the construction described, be wound up while running and without interfering with or sus- 6 5 pending its action; and as the lower barrel forms also a gear-wheel as well as a barrel, the winding-wheel heretofore employed is dispensed with, thus effecting a saving in cost of construction and reducing the weight of the 0 inotor.

Referring now to the second feature of my invention, G G are spring-pawls usually provided to hold the winding-wheel in check, and which in this case are applied to the barrelwheel 13 To avoid unwinding or other accident in case of failure of action of these pawls, I provide an automatic clutch, (shown at II.) This consists of a pawl .or wedge, h, which is not pivoted, but is located inside of acam guard or shield, h, secured to the base A. The point of said pawl or wedge contacts with the teeth of the wheel B as said teeth pass it in winding, yielding readily, though pressed toward said teeth bya spring, It. Should the pawls G G fail to act and the wheel B begin a backward motion, the point of the wedge h will instantly engagewith the tooth in advance of it. The backward motion of the wheel will cause said wedge to be pushed along in the 0 shield h, and the inwardly-inclining back or cam h of said shield will cause the thick end h? of said wedge to be wedged between the shield and the teeth of the wheel B", thus a resting further reverse or unwinding motion I of the latter,

What I claim as my invention is as follows: 1. In a spring-motor comprising two or more barrels, each having its own shaft and spring,

the barrel of one shaft being coupled to the shaft of the adjoining barrel, the combination,

with the barrel at that end of the motor opposite to the end where the powerof the springs is directly given off, of a winding gear-wheel,

substantially as and for the purpose set forth. 2. In a spring-motor comprising two or more barrels, each barrel having its own shaft and spring, and the barrel of one shaft being eonneeted to the shaft of the adjoining barrel, the lower or end barrel formed or provided with gear-teeth, so as to serve as a winding-wheel, substantially as and for the purpose set forth.

3. The GOI11bil1LtiO11,Witll barrel B, formed or provided with gear-teeth, of pinion O on a vertical shaft, 0, substantially as and for the purpose set forth.

JOHN B. POWELL.

Vitn esses:

ANDREW ZANE, J 12, NHL H. POWELL. 

